Bolt heading and bending machine.



PATENTED JULY 31, 1906.

0. T ROBERT. BOLT HEADING AND BENDING MACHINE.

AIPLIUATION FILED JUNE 24, 1905.

2 SHEETS-SHEET l.

NI/ENTORY W ITNESSES:

wAsnm TON o c N0- sz'mes. PATENTED JULY 31, 190? c. T. ROBERT.

BOLT HEADING AND BENDING MAGHINE.

APPLICATION FILED JUNE 24. 1905.

2 SHEETS-SHEET Z.

- Altomey 1H: NORRIS PETERS C0,, wasmnarou, a c.

UNITED STATES PATENT OFFICE.

CHARLES TREFFLE ROBERT, TURNERS FALLS, MASSACHUSETTS.

BOLT HEADING AND BENDING MACHINE.

' Specification of Letters Patent.

Patented July 31, 1906.

Application filed June 24, 1905- Serial No. 266,828.

. vented certain new and useful Improvements lating the length of thework.

in Bolt Heading and Bending Machines, of which the following is aspecification.

My invention relates to improvements in a combined bolt heading andbending machine, and refers particularly to a machine especially adaptedto be used either as a bolt-heading machine or as a bending-machine andwhich.

will thereby have a wide range of work and usefulness.

One object of my invention is the provision of a device of the classdescribed which may be used for heading bolts of various sizes and whichis provided with means whereby the length of the bolt may be accuratelyregulated and which is so constructed as to be equally valuable also asa bending-machine in which rods or other stock may be easily bent at theproper angle.

Another object of my invention is the provision of a combined boltheading and bending machine which is simple and durable in construction,effective in operation, and practical in every particular.

With these objects in view my invention consists of a stationary and amovable jaw, dies carried in said jaws and adapted to receive work ofvarious sizes, means for opening and closing said jaws, and a gage forregu- My invention further consists in certain other novel features ofconstruction and com bination of parts, substantially as disclosedherein.

Figure 1 represents a side elevation of my improved bolt heading. andbending machine, showing the jaws open or in the position they normallyoccupy and the movable jaw partly in section to show the means forholding the dies in position. Fig. 2 represents a top plan view of theinvention, showing the jaws in closed position and the means for holdingand adjusting the dies in proper position. Fig. 3 represents a sideelevation of the crank which forms the fulcrum for closing the jaws.Fig. 4 represents a detail view of the inclosing bracket or linkforholding the gage in adjusted position. Fig. 5 represents a top plan viewof the foot-lever which when depressed operates to close the jaws. Fig.6 represents detail views of the gage for adjusting the length of thework; and Fig. 7 represents detail views of the dies for use in themachine and which, as shown, adapt the machine for work of varioussizes.

Referring to the drawings, the letter A designates the column orstandard of the machine, which is suitably secured upon a base B of asuflicient size to insure steadiness and prevent overturning of themachine. To the base at one side of the standard are bolted or otherwisesecured the brackets C, having the journal-bearings O therein, in whichis adapted to fitthe crank-shaft D, formed with the crank D. On theupper portion of the standard a head is provided consisting of thestationary member or jaw E, formed with an extension F, in which ispivoted at G the movable jaw H. These jaws consist of the side pieces J-and the end bars J, secured thereto by bolts J. Set-screws K are securedin the head to adjust the dies L in proper position, and plates M areprovided to protect the dies from being bruised by the setscrews. Aswill be noted, these dies are square, and on four of their sides comlementary grooves or notches L are forme so that the same dies may beused for differentsized material. On the movable jaw, on its outsideface, extensions or brackets M are formed and in which is ivoted thelink N, provided on its lower en with the connecting-strap O, whichconnects the link to the crank D. On the extended end of the crankshaftis secured by set-screws or other suitable means the foot-lever P, whichis normally held upward by the spring Q,.thus holding the jaws normallyin open osition.

On the side of the stan ard to which the movable jaw is pivoted areformed semicircular recesses or grooves R, which are of any convenientsize and are preferably spaced equidistantly. Adapted to rest againstthis face of the standard is the gage member S, provided on one facewith semicircular recesses S of the same size as those on the standard,but spaced differently, so that the gage may be adjusted by fractions ofan inch by means of the adjustingpin or plug T, which is inserted in thehole formed by the corresponding notches. A link U is adapted to embracethe standard and the gage, and the link is prevented from slipping ormoving on the gage by a pin V, passing through the link and engaging asemicircular recess W, formed in the gage. The link is made large enoughso that there is a space left between the proper hole.

said link and the standard, and a wedge X is fitted in this opening tosecure the link and gage in proper position. By means of thisconstruction the gage is given a Vernier adjustment and may be regulatedto fractions of an inch, according as the grooves or recesses arespaced.

The bolt to be headed or the piece to be bent is placed in the head ofthe machine with its end resting on the top of the gage, and the jaw isclosed by pressure on the foot-lever, and the necessary operations maythen be performed with ease. To work with material of a different size,it is simply necessary to loosen the set-screws and remove the "dies andreplace them with the proper-sized notches corres onding. The gage maybe adjusted for iiierent lengths of work by loosening the wedge,removing the settingpin, moving the gage upward or downward, as the casemaybe, and then insertin the pin in As before state the holes in thegage and standard are out of alinement, and thus the gage may beadjusted for sixteenths of an inch or less.

It will be seen that my invention forms an excellent bending-machine, asthe work may be securely held and accurately bent at right angles or asdesired.

From this description, taken in connection I provide a machine that isequally adaptable either for bolt heading or for bending,

which may be quickly adapted for various sizes of work, which is simpleand durable in construction, and which is efficient and practical inevery particular.

I claim 1. In a bolt heading and bending machine, the combination with astandard having transverse grooves or recesses in one of its faces, agage member formed with vernier recesses, a key adapted to fit theengaging recesses of the standard and gage, and a yoke carried by thestandard to secure the gage thereto.

2. The combination with a standard formed with transverse recesses inone of its sides, a gage-block formed with Vernier recesses, a keyadapted to fit in the engaging recesses of the block and standard, of alink surroundin the block and standard, and a wedge secured between thestandard and link.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES TREFFLE ROBERT.

Witnesses:

PHILIP ALLARD, JOHN F. SHEA.

